aboutsummaryrefslogtreecommitdiff
path: root/include/asm-m32r/pgtable.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-17 09:57:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-17 09:57:17 -0700
commit4dc8ab86e0724642e2f778116de64f4b832d7d94 (patch)
treeba3e1327823ac94dc5d33cb76d8704ea0ad915d7 /include/asm-m32r/pgtable.h
parentb9836e08375d86834edcde45e3628e63db8b9624 (diff)
parent78a49990269a539fc77e9a669d9e74e1dfaec657 (diff)
Merge branch 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev
* 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev: m32r: move include/asm-m32r/* to arch/m32r/include/asm/ m32r: move include/asm-m32r headers to arch/m32r/include/asm
Diffstat (limited to 'include/asm-m32r/pgtable.h')
-rw-r--r--include/asm-m32r/pgtable.h363
1 files changed, 0 insertions, 363 deletions
diff --git a/include/asm-m32r/pgtable.h b/include/asm-m32r/pgtable.h
deleted file mode 100644
index e6359c566b5..00000000000
--- a/include/asm-m32r/pgtable.h
+++ /dev/null
@@ -1,363 +0,0 @@
-#ifndef _ASM_M32R_PGTABLE_H
-#define _ASM_M32R_PGTABLE_H
-
-#include <asm-generic/4level-fixup.h>
-
-#ifdef __KERNEL__
-/*
- * The Linux memory management assumes a three-level page table setup. On
- * the M32R, we use that, but "fold" the mid level into the top-level page
- * table, so that we physically have the same two-level page table as the
- * M32R mmu expects.
- *
- * This file contains the functions and defines necessary to modify and use
- * the M32R page table tree.
- */
-
-/* CAUTION!: If you change macro definitions in this file, you might have to
- * change arch/m32r/mmu.S manually.
- */
-
-#ifndef __ASSEMBLY__
-
-#include <linux/threads.h>
-#include <linux/bitops.h>
-#include <asm/processor.h>
-#include <asm/addrspace.h>
-#include <asm/page.h>
-
-struct mm_struct;
-struct vm_area_struct;
-
-extern pgd_t swapper_pg_dir[1024];
-extern void paging_init(void);
-
-/*
- * ZERO_PAGE is a global shared page that is always zero: used
- * for zero-mapped memory areas etc..
- */
-extern unsigned long empty_zero_page[1024];
-#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
-
-#endif /* !__ASSEMBLY__ */
-
-#ifndef __ASSEMBLY__
-#include <asm/pgtable-2level.h>
-#endif
-
-#define pgtable_cache_init() do { } while (0)
-
-#define PMD_SIZE (1UL << PMD_SHIFT)
-#define PMD_MASK (~(PMD_SIZE - 1))
-#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
-#define PGDIR_MASK (~(PGDIR_SIZE - 1))
-
-#define USER_PTRS_PER_PGD (TASK_SIZE / PGDIR_SIZE)
-#define FIRST_USER_ADDRESS 0
-
-#ifndef __ASSEMBLY__
-/* Just any arbitrary offset to the start of the vmalloc VM area: the
- * current 8MB value just means that there will be a 8MB "hole" after the
- * physical memory until the kernel virtual memory starts. That means that
- * any out-of-bounds memory accesses will hopefully be caught.
- * The vmalloc() routines leaves a hole of 4kB between each vmalloced
- * area for the same reason. ;)
- */
-#define VMALLOC_START KSEG2
-#define VMALLOC_END KSEG3
-
-/*
- * M32R TLB format
- *
- * [0] [1:19] [20:23] [24:31]
- * +-----------------------+----+-------------+
- * | VPN |0000| ASID |
- * +-----------------------+----+-------------+
- * +-+---------------------+----+-+---+-+-+-+-+
- * |0 PPN |0000|N|AC |L|G|V| |
- * +-+---------------------+----+-+---+-+-+-+-+
- * RWX
- */
-
-#define _PAGE_BIT_DIRTY 0 /* software: page changed */
-#define _PAGE_BIT_FILE 0 /* when !present: nonlinear file
- mapping */
-#define _PAGE_BIT_PRESENT 1 /* Valid: page is valid */
-#define _PAGE_BIT_GLOBAL 2 /* Global */
-#define _PAGE_BIT_LARGE 3 /* Large */
-#define _PAGE_BIT_EXEC 4 /* Execute */
-#define _PAGE_BIT_WRITE 5 /* Write */
-#define _PAGE_BIT_READ 6 /* Read */
-#define _PAGE_BIT_NONCACHABLE 7 /* Non cachable */
-#define _PAGE_BIT_ACCESSED 8 /* software: page referenced */
-#define _PAGE_BIT_PROTNONE 9 /* software: if not present */
-
-#define _PAGE_DIRTY (1UL << _PAGE_BIT_DIRTY)
-#define _PAGE_FILE (1UL << _PAGE_BIT_FILE)
-#define _PAGE_PRESENT (1UL << _PAGE_BIT_PRESENT)
-#define _PAGE_GLOBAL (1UL << _PAGE_BIT_GLOBAL)
-#define _PAGE_LARGE (1UL << _PAGE_BIT_LARGE)
-#define _PAGE_EXEC (1UL << _PAGE_BIT_EXEC)
-#define _PAGE_WRITE (1UL << _PAGE_BIT_WRITE)
-#define _PAGE_READ (1UL << _PAGE_BIT_READ)
-#define _PAGE_NONCACHABLE (1UL << _PAGE_BIT_NONCACHABLE)
-#define _PAGE_ACCESSED (1UL << _PAGE_BIT_ACCESSED)
-#define _PAGE_PROTNONE (1UL << _PAGE_BIT_PROTNONE)
-
-#define _PAGE_TABLE \
- ( _PAGE_PRESENT | _PAGE_WRITE | _PAGE_READ | _PAGE_ACCESSED \
- | _PAGE_DIRTY )
-#define _KERNPG_TABLE \
- ( _PAGE_PRESENT | _PAGE_WRITE | _PAGE_READ | _PAGE_ACCESSED \
- | _PAGE_DIRTY )
-#define _PAGE_CHG_MASK \
- ( PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY )
-
-#ifdef CONFIG_MMU
-#define PAGE_NONE \
- __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
-#define PAGE_SHARED \
- __pgprot(_PAGE_PRESENT | _PAGE_WRITE | _PAGE_READ | _PAGE_ACCESSED)
-#define PAGE_SHARED_EXEC \
- __pgprot(_PAGE_PRESENT | _PAGE_EXEC | _PAGE_WRITE | _PAGE_READ \
- | _PAGE_ACCESSED)
-#define PAGE_COPY \
- __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_ACCESSED)
-#define PAGE_COPY_EXEC \
- __pgprot(_PAGE_PRESENT | _PAGE_EXEC | _PAGE_READ | _PAGE_ACCESSED)
-#define PAGE_READONLY \
- __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_ACCESSED)
-#define PAGE_READONLY_EXEC \
- __pgprot(_PAGE_PRESENT | _PAGE_EXEC | _PAGE_READ | _PAGE_ACCESSED)
-
-#define __PAGE_KERNEL \
- ( _PAGE_PRESENT | _PAGE_EXEC | _PAGE_WRITE | _PAGE_READ | _PAGE_DIRTY \
- | _PAGE_ACCESSED )
-#define __PAGE_KERNEL_RO ( __PAGE_KERNEL & ~_PAGE_WRITE )
-#define __PAGE_KERNEL_NOCACHE ( __PAGE_KERNEL | _PAGE_NONCACHABLE)
-
-#define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL)
-
-#define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL)
-#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO)
-#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
-
-#else
-#define PAGE_NONE __pgprot(0)
-#define PAGE_SHARED __pgprot(0)
-#define PAGE_SHARED_EXEC __pgprot(0)
-#define PAGE_COPY __pgprot(0)
-#define PAGE_COPY_EXEC __pgprot(0)
-#define PAGE_READONLY __pgprot(0)
-#define PAGE_READONLY_EXEC __pgprot(0)
-
-#define PAGE_KERNEL __pgprot(0)
-#define PAGE_KERNEL_RO __pgprot(0)
-#define PAGE_KERNEL_NOCACHE __pgprot(0)
-#endif /* CONFIG_MMU */
-
- /* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_EXEC
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
-/* page table for 0-4MB for everybody */
-
-#define pte_present(x) (pte_val(x) & (_PAGE_PRESENT | _PAGE_PROTNONE))
-#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
-
-#define pmd_none(x) (!pmd_val(x))
-#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
-#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
-#define pmd_bad(x) ((pmd_val(x) & ~PAGE_MASK) != _KERNPG_TABLE)
-
-#define pages_to_mb(x) ((x) >> (20 - PAGE_SHIFT))
-
-/*
- * The following only work if pte_present() is true.
- * Undefined behaviour if not..
- */
-static inline int pte_dirty(pte_t pte)
-{
- return pte_val(pte) & _PAGE_DIRTY;
-}
-
-static inline int pte_young(pte_t pte)
-{
- return pte_val(pte) & _PAGE_ACCESSED;
-}
-
-static inline int pte_write(pte_t pte)
-{
- return pte_val(pte) & _PAGE_WRITE;
-}
-
-/*
- * The following only works if pte_present() is not true.
- */
-static inline int pte_file(pte_t pte)
-{
- return pte_val(pte) & _PAGE_FILE;
-}
-
-static inline int pte_special(pte_t pte)
-{
- return 0;
-}
-
-static inline pte_t pte_mkclean(pte_t pte)
-{
- pte_val(pte) &= ~_PAGE_DIRTY;
- return pte;
-}
-
-static inline pte_t pte_mkold(pte_t pte)
-{
- pte_val(pte) &= ~_PAGE_ACCESSED;
- return pte;
-}
-
-static inline pte_t pte_wrprotect(pte_t pte)
-{
- pte_val(pte) &= ~_PAGE_WRITE;
- return pte;
-}
-
-static inline pte_t pte_mkdirty(pte_t pte)
-{
- pte_val(pte) |= _PAGE_DIRTY;
- return pte;
-}
-
-static inline pte_t pte_mkyoung(pte_t pte)
-{
- pte_val(pte) |= _PAGE_ACCESSED;
- return pte;
-}
-
-static inline pte_t pte_mkwrite(pte_t pte)
-{
- pte_val(pte) |= _PAGE_WRITE;
- return pte;
-}
-
-static inline pte_t pte_mkspecial(pte_t pte)
-{
- return pte;
-}
-
-static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
-{
- return test_and_clear_bit(_PAGE_BIT_ACCESSED, ptep);
-}
-
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
-{
- clear_bit(_PAGE_BIT_WRITE, ptep);
-}
-
-/*
- * Macro and implementation to make a page protection as uncachable.
- */
-static inline pgprot_t pgprot_noncached(pgprot_t _prot)
-{
- unsigned long prot = pgprot_val(_prot);
-
- prot |= _PAGE_NONCACHABLE;
- return __pgprot(prot);
-}
-
-#define pgprot_writecombine(prot) pgprot_noncached(prot)
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), pgprot)
-
-static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{
- set_pte(&pte, __pte((pte_val(pte) & _PAGE_CHG_MASK) \
- | pgprot_val(newprot)));
-
- return pte;
-}
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-
-static inline void pmd_set(pmd_t * pmdp, pte_t * ptep)
-{
- pmd_val(*pmdp) = (((unsigned long) ptep) & PAGE_MASK);
-}
-
-#define pmd_page_vaddr(pmd) \
- ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
-
-#ifndef CONFIG_DISCONTIGMEM
-#define pmd_page(pmd) (mem_map + ((pmd_val(pmd) >> PAGE_SHIFT) - PFN_BASE))
-#endif /* !CONFIG_DISCONTIGMEM */
-
-/* to find an entry in a page-table-directory. */
-#define pgd_index(address) \
- (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
-
-#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
-
-/* to find an entry in a kernel page-table-directory */
-#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-
-#define pmd_index(address) \
- (((address) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
-
-#define pte_index(address) \
- (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-#define pte_offset_kernel(dir, address) \
- ((pte_t *)pmd_page_vaddr(*(dir)) + pte_index(address))
-#define pte_offset_map(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
-#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
-
-/* Encode and de-code a swap entry */
-#define __swp_type(x) (((x).val >> 2) & 0x1f)
-#define __swp_offset(x) ((x).val >> 10)
-#define __swp_entry(type, offset) \
- ((swp_entry_t) { ((type) << 2) | ((offset) << 10) })
-#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
-#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
-
-#endif /* !__ASSEMBLY__ */
-
-/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
-#define kern_addr_valid(addr) (1)
-
-#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
- remap_pfn_range(vma, vaddr, pfn, size, prot)
-
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-#define __HAVE_ARCH_PTE_SAME
-#include <asm-generic/pgtable.h>
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_M32R_PGTABLE_H */